Windscreen wiper arm adjusting tool



FIG. 1 is a front elevational view of a windscreen wiper arm adjusting tool showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a left side elevational view thereof, it being understood that the opposite side is a mirror image thereof. 

CLAIM The ornamental design for a windscreen wiper arm adjusting tool, as shown and described. 